Alpha-nu-amyl cinnamal ethyl cyanoacetate as a pest-control agent



' cordance with the invention.

Patented Jan. 5, 1943 cz-N- AMYL CINNAMAL ETH YL CYANOACE- TATE AS A PEST-CONTROL AGENT William Moore, Stamford, Conn, assignor to American Cyanamid Company, New York, N. Y., a corporation of Maine 4 N Drawing. Application April 10, 1941, Serial No. 387,872

1 Claim.

The present invention relates to a pest-control agent and more particularly to a compound which is especially effective as a contact poison for the control of insects and allied pests.

I have discovered that a-Il-fllllYl cinnamal ethyl cyanoacetate possesses strong insecticidal activity against sucking and soft-bodied insects which are particularly difiicult to exterminate, for example the citrus red spider, Tetrcmychus citri, and the bean aphid, Aphis rumz'cis.

The following example illustrates a specific method of preparing the above compound in ac- Materials employed are in parts by weight.

Example The reaction productwas dissolved in ether, washed neutral (0.05%

Spray solutions were prepared by dissolving the a-n-amyl cinnamal ethyl cyanoacetate in a solvent medium consisting of acetone and 35% water. A control was obtained when a spray of 1-1000- dilution was used against the citrus red spider, Tetranychus citri. At a dilution of 1-500 the insecticide gave a 71% control on the bean aphid, Aphis rumic is.

Although the compound of this invention is especially effective as a contact poison for the control of insect pests, it may also be used for fungicidal and bactericidal purposes.

This new insecticide may be applied in any of the conventional manners. Thus, for example, it may be used in an aqueous emulsion or incorporated in organic liquids such a", the aliphatic and aromatic hydrocarbons for spraying purposes, or it may be ellectively used in dusts with such inert solid diluents as kieselguhr, wood flour, Walnut shell, talc, and the like.

While the invention has been described with particular reference to specific embodiments, it is to be understood that it is not to be limited thereto but is to be construed broadly and restricted solely by the scope of the appended claim.

I claim: 7

An insecticide containing as an active. ingredient a-n-amyl cinnamal ethyl cyanoacetate.

WILLIAM MOORE. 

